[rsync]

The idea would be to have zero caloric inputs.

So water and coffee or tea (without milk, of course) would be fine. You're trying to avoid an insulin response and firing up the entire machinery of digestion.

I think it's non-controversial to say that this starves the cancer cells.

Perhaps less certainly we can also say that digestion demands a lot of resources and is an interrupt for a lot of other processes. When your body has nothing to do for 24-36 hours eventually lower priority tasks get attended to ... like garbage collection.

[agumonkey]

Student said that sadly cancerous cells could last longer starving than healthy cells.

[majkinetor]

Not zero. Fat has zero effect on insulin. You need to limit carbs and proteins.